Format to be displayed in the rear screen: NSS/Race Number
Vinyl lettering, not shoe whitener, please.  "NSS/" can be pretty much any size, but the race number should be 3" high.
The list of race numbers already used:
0-10 aren't available

11
13

14

18

20

21

22

26

34

35

37

43

50

52
57

59
61

64

65

66

67

68

69

70

71

72

73

76

77

78

87

88

91

93

101

103

​

123

139
149

162

163

164

172

198

229

249

284

289
301

302

313
317
326

327

340

349

360

363

390

396

408

416

426

440

442

454
469

470

475

483

493

494

500

502

510

528
554

559

572

608

637

666

707

710

731

735

740

758

864

952

972

1018

1910

1964

1965

1966

1967

1969

1971

1972
1978

2017
2725

3555

4404

4406
4566
4888

6579

7511

7767
8608

8735